Abstract: An electric aircraft emergency power supply module, which is connectable to an electric charger, comprises: at least one electric power cell for storing and supplying electric energy; at least one voltage sensor for measuring the electric voltage (U) of the at least one electric power cell; and a controller for controlling a charging of the at least one electric power cell. Controlling the charging of the at least one electric power cell includes receiving a voltage indication signal (U(t)), indicative of the electric voltage (U) of the at least one electric power cell over time (t), from the at least one voltage sensor; determining the second derivative (U?(t)) of the voltage indication signal (U(t)) with respect to time (t); and on the basis of a positive-to-negative zero crossing of the second derivative (U?(t)) of the voltage indication signal (U(t)), simulating the behavior of a temperature sensitive element.

Abstract: An aircraft reading light with a color-tunable reading light output includes: a white light source for emitting white light; a colored light source for emitting colored light; and an optical element, which is arranged for directing colored light that is emitted by the colored light source onto the white light source for being diffusely reflected at the white light source. The colored light source is controllable independently from the white light source.

Abstract: An exterior aircraft light with integrated light output monitoring includes a light source support, at least one light source, arranged on an outward facing side of the light source support, an aperture in the light source support, a light collection surface, arranged to direct an output monitoring light portion of the light, emitted by the at least one light source, through the aperture in a predefined angular range with respect to the light source support. The light also includes a light detector, arranged on a back side of the light source support, and a total internal reflection optical element, arranged to direct the output monitoring light portion, having travelled through the aperture in the predefined angular range with respect to the light source support, to the light detector via total internal reflection.

Abstract: An aircraft beacon light includes a plurality of primary light sources for emitting light into at least two spatial sectors, wherein the at least two spatial sectors include a forward sector and at least one of an aft sector, a starboard lateral sector, and a portside lateral sector; and a light transmissive cover, which covers the plurality of primary light sources. The plurality of primary light sources are arranged and configured for providing an FAR-compliant aircraft beacon light output of the aircraft beacon light, in case of the light transmissive cover being in a non-eroded state. The aircraft beacon light also includes at least one booster light source for selectively emitting a booster light output into the forward sector. The at least one booster light source is controllable independently of the plurality of primary light sources.

Abstract: Aircraft headlight includes at least one light source; and a light transmissive cover, at least partially covering the at least one light source. The light transmissive cover includes a first layer made of a first material; a second layer made of a second material, which differs from the first material; and at least one electric heating wire for heating the light transmissive cover by passing an electric current through the electric heating wire. The at least one electric heating wire is embedded into the first layer.

Abstract: A protective cover for a fuselage-mounted exterior aircraft light includes a fuselage-facing mounting side for mounting the protective cover to an exterior aircraft light housing or to an exterior skin of an aircraft; a light transmissive forward facing light emission surface; and an air deflection zone, which is shaped to direct a portion of an impinging air stream (A) along and over the forward facing light emission surface for shielding the forward facing light emission surface from the impinging air stream (A).

Abstract: An aircraft light comprises a support board; a light source, arranged on the support board; a first optical element, which is at least partially light transmissive, which is arranged over the light source, and which is fixed to the support board; and a second optical element, which is at least partially light transmissive, wherein the first optical element is interposed between the light source and the second optical element. The first optical element has a first engagement portion and the second optical element has a second engagement portion. The first engagement portion and the second engagement portion establish a positive fit between the first optical element and the second optical element. At least a portion of light, which is emitted by the light source in operation, passes through the first optical element and through the second optical element.

Abstract: An aircraft navigation light, configured to be usable as any of a left forward navigation light, a right forward navigation light, and a tail navigation light of an aircraft, comprises a common support plate which is substantially vertical in the aircraft frame of reference; a first light source arranged on the common support plate for emitting red light; a second light source arranged on the common support plate for emitting green light; a third light source arranged on the common support plate for emitting white light; a driving circuit coupled to the first light source, the second light source and the third light source and configured to supply power to a selected one of the first light source, the second light source, and the third light source; and a blocking element arranged to limit the light output of the aircraft navigation light to one lateral side.

Abstract: A method of determining operating conditions of an exterior aircraft light comprising at least one light source includes: operating the at least one light source of the exterior aircraft light; repeatedly detecting light with a light detector, which is located at the exterior aircraft light and configured for providing light detection values; determining a smallest light detection value (Imin) provided by the light detector within a first period of time, and storing said smallest light detection value (Imin) as an element of a series of smallest light detection values (Imin); and evaluating the light detection values and the series of smallest light detection values (Imin) for detecting erosion of an optical component of the exterior aircraft light, for detecting the presence of ambient light and/or for detecting the presence of fog and/or clouds in front of the exterior aircraft light.

Abstract: An exterior aircraft light that can be used on an aircraft includes a dome-shaped light transmissive cover, a light emission assembly, and an interface assembly. The light emission assembly comprises a light emission tower portion, having a cover-facing end and an opposite aircraft-facing end and having a hollow channel extending between the aircraft-facing end and the cover-facing end, a platform portion, and at least one light source and at least one optical element, arranged on the platform portion. The interface assembly extends through the hollow channel of the light emission tower portion and comprises an elevated base, which is configured for mechanically supporting and electrically connecting an electric component, the electric component being at least one of a data reception component, a data transmission component, and a data generation component. The interface assembly further comprises at least one signal line, which extends from the elevated base through the interface assembly.

Abstract: An aircraft beacon light includes a light source carrier, wherein the light source carrier comprises a plurality of connection fields, with the plurality of connection fields forming at least two polygonal connection structures on the light source carrier. The beacon also includes a plurality of LED modules, with the plurality of LED modules being arranged along a particular one of the at least two polygonal connection structures and with each of the plurality of LED modules being coupled to a respective connection field of said particular one of the at least two polygonal connection structures.

Abstract: An exterior aircraft light includes a mounting board, a light source arranged on the mounting board and a lens arranged over the light source. The lens includes a first lens portion on a first side of a cross-sectional center plane, which is orthogonal to the mounting board and which runs through the light source, and a second lens portion on a second side of the cross-sectional center plane. The light also includes a reflector, arranged to reflect light, emitted by the light source into the first lens portion, towards the second lens portion, wherein the lens fully encloses the light source and the reflector.

Abstract: An aircraft exterior anti-collision light system includes a plurality of anti-collision lights and a bus, wherein each of the plurality of anti-collision lights is coupled to the bus. Each of the plurality of anti-collision lights comprises at least one light source and is configured to emit a sequence of light flashes (R,W). Each of the plurality of anti-collision lights is configured to carry out an initialization routine in response to an activation command. Each of the plurality of anti-collision lights is configured to transmit an activation status message on the bus, after the initialization routine has been carried out. Each of the plurality of anti-collision lights is configured to listen on the bus for activation status messages and to log activation status messages received on the bus. Each of the plurality of anti-collision lights is configured to set a timing of (R,W) depending on the activation status messages.

Abstract: A method of indicating a flight direction of an aerial vehicle, having a vehicle body and a plurality of rotors supported by the vehicle body, includes: on the basis of a momentary flight direction of the aerial vehicle, controlling a matrix of light sources, in particular a matrix of LEDs, which are mounted to the vehicle body of the aerial vehicle, to provide an illumination pattern to an observer of the aerial vehicle, with the illumination pattern comprising a flight direction indication, indicative of the momentary flight direction of the aerial vehicle.

Abstract: An aircraft passenger reading light comprises at least one reading light source, which is arranged for emitting visible light in a reading light emission direction; and at least one infrared light source, which is arranged for emitting infrared light in an infrared light emission direction. The infrared light emission direction is inclined with respect to the reading light emission direction.

Abstract: An aircraft passenger reading light, which is operable in at least two predetermined configurations, comprises: a light source; an optical element; and an actuation mechanism, which is configured to modify a distance between the light source and the optical element. The distance (D) between the light source and the optical element differs in the at least two predetermined configurations and a spatial extension of the illumination, which results from the light output of the light source and the optical element, differs in the at least two predetermined configurations.

Abstract: An aircraft light comprises a support board; a light source, arranged on the support board; a first optical element, which is at least partially light transmissive, which is arranged over the light source, and which is fixed to the support board; and a second optical element, which is at least partially light transmissive, wherein the first optical element is interposed between the light source and the second optical element. The first optical element has a first engagement portion and the second optical element has a second engagement portion. The first engagement portion and the second engagement portion establish a positive fit between the first optical element and the second optical element. At least a portion of light, which is emitted by the light source in operation, passes through the first optical element and through the second optical element.

Abstract: An aircraft navigation light, configured to be usable as any of a left forward navigation light, a right forward navigation light, and a tail navigation light of an aircraft, comprises a common support plate which is substantially vertical in the aircraft frame of reference; a first light source arranged on the common support plate for emitting red light; a second light source arranged on the common support plate for emitting green light; a third light source arranged on the common support plate for emitting white light; a driving circuit coupled to the first light source, the second light source and the third light source and configured to supply power to a selected one of the first light source, the second light source, and the third light source; and a blocking element arranged to limit the light output of the aircraft navigation light to one lateral side.

Abstract: An aircraft passenger reading light comprises at least one reading light source, which is arranged for emitting visible light in a reading light emission direction; and at least one infrared light source, which is arranged for emitting infrared light in an infrared light emission direction. The infrared light emission direction is inclined with respect to the reading light emission direction.

Abstract: An aircraft beacon light includes a light source carrier, wherein the light source carrier comprises a plurality of connection fields, with the plurality of connection fields forming at least two polygonal connection structures on the light source carrier. The beacon also includes a plurality of LED modules, with the plurality of LED modules being arranged along a particular one of the at least two polygonal connection structures and with each of the plurality of LED modules being coupled to a respective connection field of said particular one of the at least two polygonal connection structures.